Not sure if people are still looking for easily removable front plate solutions for non m sport bumpers, but I think I found a solution for the 2019 xLine x40i. If your order the offset mount platypus bracket from Cravenspeed for a "2019 x5 m sport" it clears the front sensors on my xLine x40i x5.
Link:
https://www.cravenspeed.com/the-plat...mw-x5-m-sport/
Think I've got every driver assistance package you could get on a 2019, and the sensors all seem to work fine with the plate installed.
Someone who seems to be in the same situation as me had the same idea, and their review on the Cravenspeed site comes to the same conclusion that the m sport plate kit works well on a non m sport x5.